Oleg Nesterov e40cfce626 uprobes: Restrict valid_vma(false) to skip VM_SHARED vmas ... valid_vma(false) ignores ->vm_flags, this is not actually right. We should never try to write into MAP_SHARED mapping, this can confuse an apllication which actually writes to ->vm_file. With this patch valid_vma(false) ignores VM_WRITE only but checks other (immutable) bits checked by valid_vma(true). This can also speedup uprobe_munmap() and uprobe_unregister(). Note: even after this patch _unregister can confuse the probed application if it does mprotect(PROT_WRITE) after _register and installs "int3", but this is hardly possible to avoid and this doesn't differ from gdb case. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>		2012-09-29 21:21:54 +02:00
..
callchain.c	perf: Add attribute to filter out callchains	2012-08-10 12:40:57 -03:00
core.c	perf: Add ability to attach user stack dump to sample	2012-08-10 12:17:58 -03:00
hw_breakpoint.c	Merge branch 'x86/cleanups' into perf/uprobes	2012-03-13 16:33:03 +01:00
internal.h	perf: Add ability to attach user stack dump to sample	2012-08-10 12:17:58 -03:00
Makefile	uprobes: Move to kernel/events/	2012-02-22 11:08:00 +01:00
ring_buffer.c	perf: Add perf_output_skip function to skip bytes in sample	2012-08-10 12:16:22 -03:00
uprobes.c	uprobes: Restrict valid_vma(false) to skip VM_SHARED vmas	2012-09-29 21:21:54 +02:00